Argentine human rights group the Mothers of the Plaza de Mayo ended a 24-hour resistance march in Buenos Aires on Saturday to mark the end of the conservative presidency of Mauricio Macri, and herald in centre-left president-elect Alberto Fernandez tenure in government.

The group of elderly women have been peacefully campaigning for justice since the 1970s, following the disappearance of their children during the country's brutal dictatorship. They work to reunite family members separated during a crackdown on leftist groups, and along with their sister group the Grandmothers of the Plaza de Mayo they have brought together nearly 120 families.

Marching with a banner that extolls the virtues of love over hate, they denounced Macri.

The Mothers of the Plaza de Mayo have been traditionally politically aligned with the Peronist factions in Argentina. Then Peronist President Nestor Kirchner began a period of human rights trials against the military leaders, when prior presidents had pardoned the leaders.